EP 2223012 B1 20180103 - LIGHT GUIDES WITH EMBEDDED LIGHT SOURCES, AND METHOD OF MANUFACTURE
Title (en)
LIGHT GUIDES WITH EMBEDDED LIGHT SOURCES, AND METHOD OF MANUFACTURE
Title (de)
LICHTWELLENLEITER
Title (fr)
GUIDES DE LUMIÈRE
Publication
Application
Priority
- GB 2008003928 W 20081125
- GB 0723166 A 20071126
Abstract (en)
[origin: GB2448564A] A light guide device 1 comprises a base structure 2 with a first refractive index onto which light sources 3, preferably LED, are mounted and encapsulated within a first light guide 4 with a second refractive index which is equal to or less than the first refractive index of the base 2; a second light guide layer 6 with a refractive index greater than or equal to that of the base 2 is attached above the first light guide layer such that light scattering reflective structures 5 are positioned above the light sources 3 to prevent light emitted from light sources 3 directly shining towards the position of a viewing person whose line and direction of sight is shown 11. Further light scattering structures 7 made preferably of microstructures or ink dots from may be included on the base 2. The method of manufacture of the device is independently claimed.
IPC 8 full level
F21V 8/00 (2006.01)
CPC (source: EP GB KR US)
G02B 6/0011 (2013.01 - GB); G02B 6/0021 (2013.01 - EP KR US); G02B 6/0043 (2013.01 - EP KR US); G02B 6/0068 (2013.01 - KR); G02B 6/0076 (2013.01 - KR); G02F 1/1335 (2013.01 - KR); G02B 6/0065 (2013.01 - EP US); G02B 6/0068 (2013.01 - EP US); G02B 6/0076 (2013.01 - EP US); Y10T 29/49826 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
GB 0723166 D0 20080102; GB 2448564 A 20081022; GB 2448564 B 20090429; AU 2008328586 A1 20090604; AU 2008328586 B2 20131003; CN 101874179 A 20101027; CN 101874179 B 20130102; EP 2223012 A1 20100901; EP 2223012 B1 20180103; JP 2011504649 A 20110210; JP 5480816 B2 20140423; KR 101592853 B1 20160211; KR 20100110800 A 20101013; TW 200933201 A 20090801; TW I477821 B 20150321; US 2010328574 A1 20101230; US 8467013 B2 20130618; WO 2009068860 A1 20090604
DOCDB simple family (application)
GB 0723166 A 20071126; AU 2008328586 A 20081125; CN 200880118705 A 20081125; EP 08855318 A 20081125; GB 2008003928 W 20081125; JP 2010535446 A 20081125; KR 20107014092 A 20081125; TW 97145540 A 20081125; US 74464408 A 20081125